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This array of Power-related options are available for Yaskawa AC drives as shown. Some may be factory-mounted within a drive enclosure, others may be separately mounted.
|Power Options|| |
|Reactor...Used on either the input or output of a drive to reduce the effect of line-side or load-side transients. These 3-phase reactors are available in a NEMA 1 enclosure for field installation.|
|DC Bus Reactor...Used in place of an input reactor to improve power factor. Helps attenuate distortion back to the line and to reduce DC bus ripple current.|
|EMC Filter...Used to attenuate possible drive-generated noise back to the line. Along with proper shielding, routing and grounded between the filter and the drive, it is designed to reduce line-conducted noise levels to within the limits of EN61800-3/EN12015 requirements.|
Line Regeneration Converters...Yaskawa offers two line-regeneration products, that can provide braking torque in applications that have large overhauling loads or make frequent stops such as elevators, centrifuges, test stands, and winders. Line regeneration can result in significantly reduced operation costs in these types of machinery by “re-cycling” the excess power back to the power grid.
The D1000 is a high performance converter with a PWM sinusoidal waveform with very low harmonic distortion (approximately 5% THD) and is designed to meet IEEE-519 requirements. The DC5 is wired in series between the drive and the incoming line and therefore must have an equal or larger current rating than the drive. The D1000 handles both motoring and regenerative power from the drive.
The R1000 unit is lower cost with a 6-step output waveform that does not provide IEEE-519 compliant power and can be sized based on the application, from continuous to intermittent. The R1000 is wired in parallel to the drive and only handles regeneration power. The drive handles motoring power through its own diode bridge.